Crossword Genius

Uplifting spread allowed such a communication (8)

Ross

I believe the answer is:

telegram

'a communication' is the definition.
(telegram is a kind of communication)

'uplifting spread allowed' is the wordplay.
'uplifting' shows that the letters should be reversed in order.
'spread' becomes 'marge' (marge is a kind of spread).
'allowed' becomes 'let' (to let is to allow or permit).
'marge'+'let'='margelet'
'margelet' reversed gives 'TELEGRAM'.

'such' acts as a link.

(Other definitions for telegram that I've seen before include "Electric message" , "Message transmitted by wire" , "cable" , "Pre-1980s electronic message" , "Dispatch" .)

I've seen this clue in The Telegraph.
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